One of the most important and demanded products in Kia Gostar Ahura Shargh Company is bitumen with a penetration degree of 85-100, which is obtained by performing an aeration process on the raw material of vacuum batum (the raw material for bitumen production that is taken from the bottom of the vacuum distillation tower of oil refineries) in the bitumen production unit of this company.This bitumen is used in the road construction, construction, insulation, etc. industries.